Paper-folding machine.



Nb. 874,645. PATENTED DEC. 24, 1907.

' J. TRISKA.

PAPER FOLDING MACHINE.

APYLIOATIOH FILED JUNE 28. 1906.

I SHEETS-SHEET 1.

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No.- 874,645. PATENTED DEC. 24. 1907.

J. TRISKA.

PAPER FOLDING MACHINE.

APPLICATION FILED JUNE 28. 1906.

7 SHEETS-SHEET 2.

.Witu an:

PATENTED DEC. 24, 1907.

J. TRISKA.

PAPER FOLDING MACHINE.

APPLICATION FILED JUNE 28.1906.

7 SHEETS-SHEET 3.

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No. 874,645. PATENTED DEC. 24, 1907.

J. TRISKA. I PAPER FOLDING MACHINE.

nrmcxnox mum mm". 28.1906.

'1 SHEETS-SHEET 4.

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'PATENTED DEC. 24, 190?.

J. TRISKA.

PAPER FOLDING MACHINE.

APPLICATION FILED JUNE 23. 1906.

'l SHEETS-SHEET 6.

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1n: n uns r51 PATBNTED DEC. 24. 1907.

J. TRISKA. PAPER FOLDING MACHINE.

APPLICATION FILED JUNE 28. 1906.

7 SHEETS-SHEET 7- UN TED STATES.

PAT vT io FroE.

JOSEPH TRISKA, OF OMAHA, NEBRASKA.

PAPER-FOLDIN G MAGIHNE.

Specification of Letters l atent.

Patented Dec. 24,1907. I

Application filed June 28.1906. Serial in 323,855.

paper-folding machines of the class used in printing establishments, and has reference to the presentation of means for terminating certain movements of the machine, tem o rarily, to accomplish certain objects.

alterations are made, but attachments are mounted upon and used in connection with the machine to increase its usefulness.

One object is to provide means to prevent the paper sheet from passing through the folding machine unless it presents an end in alinement with the end guide and one side in alinement with the side guide.

Another object is to provide 'means to terminate operation of the reels for the puror near the operating platform or upper part I of the machine.

The invention will be readily understood from thedescription,theaccompanyingdraw- 60 i ings and appended claims. Before proceedin to a description of the 1' devices employed it should be explained that, whenever a sheet is presented imper-- fectly to the guides, these devices terminate 65 opieration of certain parts of the folding ma- 1 0 nc until an adjustment ofthesheet has been made'by mechanism belonging to the machine; and it will be seen'thatjthe novel devices which terminate operations of fold 70 ing, or of the reels, or of the two pasting mechanisms or computingv mechanism depend,vin every instance, upon the contactleaves which'I construct and use,upon the side and end guides. may be said that thefolding machine now in common use is not satisfactory on account of v l 1 the spoilage of paper sheets; a sheet, for in-' stance, when passed forwardly upon the In this'connectionit 75 tapes, often has the front end presented with 80 v one corner in advance of the opposite corner;

in such case the sheet is pressed into imperfect folds, or becomes torn or compressed into a useless mass. By use of the present 4 invention the machine will not operate to"85 pose of preventing entry into the'machine of any sheet until the sheet already therein has presented one end and one side in alinement with said guides; other objects are to prevent operation of the two paster mechanisms and the computing mechanism so that no pasting may be done and no computation made except at proper intervals, all being dependent upon the presentation of one end and a side of the paper sheet to the guides, as indicated.

The construction of the paper folding ma chines now in use is familiar to persons conversant with the art of printing, however it will be proper to state that, in the 'use of these machines ,flat sheets of paper having squared edges, are placed upon a feeding board or table and are conveyed forwardly and hori-; zontally by the reels, successively, upon a series of forwardly moving tapes upon the operating body of the folder.

They are first 4 5folded into two rectangular leaves of equal surface while near the upper plane of the machine, this double leaf being afterwards folded by means within the machine. The present invention has nothing to do with the second folding, but as above indicated has reference to means'for terminating certain movements, temporarily, during and prior to the first folding ofthe paper sheet.

The parts of the irnachine whos'e move-. ments are terminated bythe novehdevices employed are, for the most part, lvlsikleaupon.

form an imperfectly folded sheet and consequently only perfectly folded sheets are pasted or counted. 'uj

It will be understood that, in the operation of folding machines now in use, a sheet of paper to be folded Will pass forward on the tapes as far as the end guide; this end guide, common to all folding machines, will prevent any further forward movement of the sheet;

said end guide extends practically the entire I width of the machine and the front end of the sheet is certain to be encountered by this guide. Disposed transversely to the end guide and near the middle of the machine is a pair of inwardly-revolving rollers; immediately above these rollers and parallel therewith is the vertically movable folding knife which in its descending movement causes the paper to be pressed downward and en aged by the rollers which perform one fo ding. Y

The .two paster, mechanisms are mounted near the folding knife, and will be fully described; while the devices of the invention operate to terminate movements of these parts, temporarily, they havenoth' with mechanism located beneath t e into do Wardly-revolving rollers, and therefore but tail relating to Figs. 1, 4, 19 and 23.

' table.

. latter being in section.

few of the interior parts of the machine are shown in the drawin s.

In the drawings, Figure 1 represents a plan view of a folding machine, showing its rincipal parts and the improvements disc osed by the invention. Fig. 2 represents a vertical, side viewof those parts of the machine shown in Fig. 1, the lower part of the frame being broken away, and also shows a.feeding Fig-3 is an enlarged detail relating to Fig. 2, showing a reverse side of a portion of the mechanism thereof. Figs 4 and 5 represent a vertical end view, somewhat enlarged, of a part of the mechanism of a folding machine, and showing arrangement of devices employed, Fig. 5 representing the broken-away art of F 1g. 4 to show an entire end view of the machine. Fig. 6 is an enlarged detail relating to Fig. 2, and Fig. 7 is a detail relating to Fig. 6. Fig. 8 is a plan view showing parts of Fig. 6. Fig. 9 is a vertical end view in section between lines'a, a and b b of Fig. 8, looking to the left. Fig. 10 is an enlarged view, partly in section, showing a contact leaf mounted in its frame, being a detail relating to Figs. Sand 9. Fig. 11 is a sectional, vertical end view of the end guide of a folding machine, bein a dei 12 is a lan view of a fra ment of the end g ide -to ustrate a recesse portion formed t erein for receivin a contact'leaf. Fig. 13 is a side view of a eaf frame mounted .upon the end guide, said end guide being in section. Fig. 14 is a view of the interior of a leaf frame, the base and back of the frame being in section to disclose the mounting of a contact leaf and the chamfered link therein; this figure shows the end guide in section and illus trates the chamfered link released b tilting a contact leaf from actuation of the orizontally-disposed sheet therein shown. Fig. 15 is a plan view of a contact leaf and leaf frame.

Fig. 16 shows a sheet depressor of a folding machine, mounted upon an end guide, the Fig. 17 is a view of assembled parts, showing the chamfered link engaged by a contact leaf; the end guide, base and back of the leaf-frame being in section; and Fig. 18 is an end view of a contact leaf, for use upon the end guide. Fig. 19 is a plan view of assembled parts, the contacteaf, its leaf-frame, 8. art of the end ide and one of the tapes; a so showing the 0 am fered link enga ing the oscillatin -bar or crank. Fig. 20 1s a side view of t e parts shown in Fig. 19, the end 'de being in section, and a sheet of paper to be folded added to the figure. Figs. 21, 22, 23 and 24 are views of parts of the chamfered Figs. 21 and 24 show formation of the chamfered.

part of this link, and Fi 22 shows its U- ed upon the arch of the end guide, the other end of'the spring beiil mounted'upon the arch of the chamfered k, for the purpose of taking up lost motion'of said link, during its endwise movements, this feature being clearly shown in Figs. 4 and 25. Fig. 25 is a longitudinal, sectional view on lines 0 c, d d of Fig. 1', looking to the right of said figure. Figs. 26 and 27 are vertical side views of the folding knife, roller-pasting box and actuating mechanism therefor of a folding machine, parts of the frame being in section and broken away; these views show the parts, respectively, in a raised and lowered position. Figs. 28 and 29 are details relating to Figs. 4, 26 and 27, to clearly show relative position of parts during the raised or lowered position of the knife 0st. Fig. 30 is a vertical side view, part y in section, of rock-lever 5, to clearly illustrate its mounting and pivotal connection with link 6.

To accomplish certain objects of the invention, I mount a cam 1 (Figs. 1, 2, 3, 6, 8.) on the cam shaft 2 of a folding machine 3, and, by means of roller 4, mounted upon one end of rock-lever 5, a lengthwise movement 'is communicated to the side link 6; rocklever 5 is mounted near its center at 7 upon stationary block 8, said block being secured u on the machine frame 9, best shown in Fig. 30. Side-link 6 is resiliently mounted by means of spring 10 disposed between the rigid collar 11 of said link and standard 12 upon the frame. It is clear that rock-lever 5 may cause a lengthwise movement of link 6, since the upper arm of the rock-lever has a pivotal mounting at 130 upon the rigid arm 131.0f said link 6 (Fig. 30.)

I pivotally mount at 13, best shown in Fig. 1, the elbow-lever 14 having arms 15 and 16; one end of said link 6 is pivotally mounted at 17 upon arm 15, and upon arm 16 I pivotally mount the end link 18 suitably supported and slidable in brackets 19, and by the means thus described a vibratory, longitudinal movement may be imparted to both side-link 6 and end-link 18 by operation of cam 1; and by means thereof a control of devices may be obtained for thepurpose of terminating, on occasion, the operation of asting, com uting and folding, and also of eeding, for the 'urposes ment1oned.

Of the several devices employed the first of importance'are the contact leaves upon the'side and endguides; all other devices are secondary, but all are-necessary for the usefulness of the machine, in connection with the contact leaves.

It is important that means be provided to prevent a second sheet from entering the machine until the first sheet is folded, and therefore I employ devices shown in Figs. 2, 3, 6, 7,8, 9, and 10, now to be described. I mount rigidly upon the ends of frame 9 the sustaining-bar 22, so that said bar will extend above operating-platform 132 and lengthwise of the machine, said means'consisting of the leaf-arm 20 pivotally mounted at 21 (Figs. 3, '6', 8), upon. said sustainingbar and the slidable bar 23 sustained within standards 24 and 25 and having resilient means, as spring 123. The normal position of leaf-arm 20 is that of hanging so that its lower end passes below the plane of tapes 26, as shown in Fig. 6'; a forwardly-moving sheet 27 (Fig. 3.) will cause the leaf-arm to raise to a position so that it rests upon the up er surface of the sheet, since the sheetwill slide beneath said leaf-arm; upon standard 25 is pivotally mounted at 27 the locking-bar 28 (Fig. 6.); the sliding-bar 23 is provided near its front end with the recess 29 within which one end of the locking-bar 28 is adapted to enter in order that leaf-arm 20 may be in operative position-I provide lug 98 (Fig. 8 extending laterally from standard 25 which prevents the upper end of the leaf-arm from assing upward beyond this lug and thereore prevents the lower end of the leaf-arm from passing but a limited distance below the plane of sheet 27 I provide lug 100 (Fig. 8.) secured upon and extending laterally from locking-bar 28, adapted to be engaged by leaf-arm 20 when the up er end of said leaf-arm swings upward. us it will be seen that when a sheet of paper is passed forward by reels 117 and tapes 26 of the machine and the paper sheet passes beneath leaf-arm 20, the upper end of said leaf-arm will swing downward from enga ement with lug 100, which allows the end 0 locking-bar 28 to enter recess'29 of sliding-bar 23 and causes said sliding-bar to become locked or secured so that it cannot have lon itudinal movement; and the sliding-bar wil remain thus secured untilthe sheet passes from beneath the leaf-arm.

It will be understood that the means just described will operate to terminate the movement of feeding mechanism of a folding machine until the sheet within the machine has been folded, and this isv one of the desired objects in view. Sheets to be folded enter the machine by reels 117, as is well known; the conventional rock-shaft of the reel-arms is, indicated by numeral 30 reels 117 have a downward or u ward swing.- ing movement so that paper sl ieets may be engaged or disengaged; the reels are mounted upon shaft 124 and this shaft is connected to rock-shaft 30 by means of reel-arms 118, and the reels are, therefore, under control of this rock-shaft to make a limited upward and downward swinging movement (Figs. 1, 2, 6.) Upon rockshaft 30 I rigidly secure sleeve 101 having keyed thereon the upwardly-extending link 119, best shown in Fig. 6, and employ link 120 having one of its ends ivotally mounted upon the other end of li 119 as'at 122, the other end of link 120 being pivotally mounted at 121 upon guide 33 an the outer end of sliding-bar 23. By these means it will b seen that the drop movement of the ree s may be prevented by the raising of the lower end of leaf-arm 20. As already stated, the normal position of leafarm 20 is as'shown in Fig. 6, and it is obvious sheet within the machine until the sheet already therein has become properly ad justed to the contact leaves upon the side and end guides and has passed from the tapes perfectly folded.

The adjustment of the sheet to the side guide will now be explained. As shown in Figs. 8, 9 and 10, the contact leaf 31 for the side guide 33 is mounted upon the inner face of the guide. The normal position of the parts are as shown in Fig. 9; this contact leaf 31 is pivotally mounted upon the guide by having its upper end secured upon beam 34 beam 34 together with contact leaf 31 is adapted to have a limited swinging movement'in directions transverse to tapes 26 beam 34 is ivotally mounted within sided is provided with an upwardlyextending lug 35; lug 35 is adapted to lock blade 37 and the normal position of blade 37 is to be locked except when released by lug 35. Blade 37 is rigidly mounted upon horizontal bar 36, the latter being pivotally mounted at its ends and is adapted to swing the blade 37 under operation of arm 38 (Fig. 6.); one end of horizontal bar 36 has bearings 125 upon sustaining-bar 22, the other end having a rigid mounting at 126 in link 127, best shown in Fig. 7 arm 38 has one of its ends ivotally mounted upon the lower end of linli 127 as at 128, the opposite end of said arm having a pivotal connection with side-link 6, as at 129 (Fig. 1.); a lengthwise movement of arm 38 will therefore cause a limited degree of rotation of horizontal bar 36, and it will be understood that a movement of cam 1 will cause a swinging movement of blade 37, as thus connected a sheet passing on the ta es in true side alinement will, under operation of side guide 33, cause contact leaf 3 1 to be pushed backward, thereby releasing blade-37, which permits roller 4 to follow the surface of cam 1.

It will be noted thatblade 37 has an elongated form and this is a convenient construction since paper to be folded is of different sizes; when larger sheets are to be folded, the side guide may be adjusted to a position nearer the outer framework of the machine, and blade 37, being transversely disposed with reference to tapes 26, will make contact as will be seen, is adapted to have a longi- 3o shown in Fig. 2, of the end portion 97 of sizes and has, preferably, vertically disposed with lug 35 whether side guide 33 is positioned toward the outer part, or nearer the middle of the machine.

It has been shown that the function of contact-leaf 31 is to prevent the operation of folding unless it has been engaged by a side edge of a pa er sheet. Alinement of the front edge 0 the sheet with two contact leaves upon the end guide is necessary, however, in conjunction with the function performed by contact-leaf 31, in order to attain the objects of the invention and means for this purpose will now be explained.

I construct and mount upon the endguide 39 two contact leaf-frames 40 (Figs. 1, 4, 25.) and pass horizontally through said leaf-frames the link 41 chamfered at 42 near each of its ends and formed'with the arch 133, clearly shown in Fig. 25; arch 133 of link 41 conforms, generally, to arch 134 of end guide 39, and I mount block 135 upon arch 134 of said end-guide; I secure collar 136 upon the arch 133 of said link 41 and emloy resilient means, as spring 137 upon said link between the block and collar link 41, as formed and disposed is parallel with endguide 39, the arch 133 thereof passing above the conventional arch of the end guide, and,

tudinal vibratory movement to pass its seating in block 135, the function of s ring 137, belng to take up lost motion. he chamfered link 41 receives its endwise movement from arm 66 (Figs. 1, .4, 25.), said arm 66 having a pivotal connection at 43 (Figs. 1, 5.) with end link 18 for one of its ends, the opposite end of arm 66 having a pivotal mounting at 44 upon the short arm, clearly crank 45 (Figs. 1,2.) said crank being mounted in standards 46 and 47. To effect a mounting of link 41 upon crank 45 I preferably employ the yoke 95, best shown in Fig. 22, the arms of the yoke passing upon the sides of the crank, as indicated at 48 in Figs. 19 and 20. Crank 45 has a len th sufiicient for adjustment .of the end gui e to accommodate the handling of sheets of different arms 96 (Fi s. 2, 20.) and the horizontallydisposed end-portions 97; one ofsaid endportions 97 is pivotally mounted upon standard 47 (Figs. 1, 2.), the other end-portion 97 having a pivotal mounting in standard 46 I and extended outwardly or beyond standard 46 in order that a convenient connection may be made with end-link 18 as by means of arm 66, above mentioned; since arm 66 for one of its ends has apivotal mounting at 44 upon the outer end-portion 97 of crank 45 as already described, and has its opposite end pivotally mounted at 43 upon link 18 (Figs. 1, 5, 25.), movement of end-link 18 and of chamfered link 41 will be simultaneous, as is apparent, and it will be understood that the mount one of these contact-leaves pivotallyat 52 in each frame 40, these frames being vertically disposed and rigidly secured near the opposite ends of arch 133 upon the upper surface of end guide 39. Arm 51 is broader and heavier than arm 50, and the normal position of the contact-leaves is to have the upper arm 51 tilted backward, the arm 50 hanging dependingly and nearly perpendicular, as shown in Figs. 17 and 20.

The chamfered part 42 of link 41 is within the chamber of each of frames 40, the transverse wall 53 (Fig. 21.) of said link being nearest crank 45, and it will be understood that arm 51 'of the contact-leaf is adapted to have a slight backward swing, the upper part or arm 51 passing within the chamfered part of this link in a manner to revent the described endwise movement of ink 41. The normal position of contactleaves 49 with reference tolink 41 will cause a locked position and prevent a longitudinal movement of said link, and when a sheet of paper to be folded passes forwardly upon the tapes, in true alinement, so that its front edge is presented to arms 50 of both contact leaves u on said end guide, these arms are ressed ackward, and link 41 is thereby reeased or unlocked.

The contact leaf-frames are secured at suitable distances apart upon the end guide so that theoperation of the contact leaves will secure exactness of alinement of the sheet. If one of these contact-leaves is engaged by a part of the front edge of a for wardly moving sheet, one release is thereby made of chamfered link 41, but said link is not fully released until both lower arms of the contact-leaves have been pressed backward by the same edge of the same sheet. As soon as link 41 is fully released, side link 6 may resume a position under operation of spring 10 so that roller 4 will ride upon the surface of cam 1. It will be understood, however, that while side-link 6 may be released from the resilient action of sprin 10 through operation ofdevices just descri ed, a further release through arm 38 for sidelink'6 must first be made before roller 4 can ride upon the cam; it has heretofore been shown that a side presentation and contact of the sheet must be made to contact leaf 31 upon the side guide before arm 38 will be reknown that it requires no particular description; it is actuated by mechanismwithin the machine in a manner sothat the pasterblade 53; has a swinging movement, its free end passing from the fountain 65 to the posi tion shown in Figs. 4 and 25, its operative movement being a downward stroke, to impress the paper at intervals, under operation of shaft 55 (Fig. 4.), said shaft being actuated by link 56 and crank 67, link 5.6 being actuated by arm 68, mounted on shaft 69. In order that the movement of this pasting mechanism may be terminated, temporarily, while a sheet is upon the tapes in process of alinement with the contact-leaves upon the side and end guides, and in order that the pasting process will operate in harmon with a movement of the sheet, I construct dbvices now to be described.

I rigidly mount the block 57 (Figs. 1, 4, 25.) upon the end link 18 and provide the horizontally disposed platform 58 mounted stationary u onframe 9; platform 58 has the upturne projection 59 operating as a stop-lug; I construct arm 60 which has one of its ends pivotally connected as at 138 with arm 68 and with link 56, its opposite end terminating in contact-finger 61, adapted to slide upon platform 58 and upon occasion to pass over stop-lug 59, as be explained. Rigidly upon arm 60* I mount the transversely-disposed arm 70, best shown in Fig. 1, and mount roller 62 upon arm 70, this roller being upon the same vertical plane as end-link 18. As thus constructed and arranged, arm 60 passes between vertical guidearms 63; block 57 is provided with inclined face 64, and it will be understood that during thelongitudinal movement of link 56, arm 60 will have a corresponding movement therewith and the end of finger 61 of arm 60 will not make contact with lug 59 while paper is passing in a regular manner through the machine, since roller 62v will roll up the incline 64 and will carry arm 60 upward so that finger 61 will not make contact with lug 59;

but when the forward movement of end-link 18 is prevented by reason of a sheet not making true alinement to the side and the end contact-leaves already described, block 57 will not be presented to roller 62 and the end of finger 61 will make contact with lug'59, thereby terminating a forward movement of link 56 and by these means the pastor blade 53' is prevented from descending upon the aper sheet, until the sheet upon the tapes as been adjusted. Q'lhe pasting-boxj 1 known as the roller {paste-r, is 'located% above the surface of and near the middle of the machine, and the mechanism. which actuates it, and relative position of parts are best shown in Figs. 26 and 27; it is. used only when a printed sheet is to be folded to form several pages. It distributes a Line of paste across at part of a sheet in a direction transverse to that of the longitudinal paster while the sheet is upon the tapes (hiring the folding of the sheet, and it is important to temporarily terminate its operationof asting sheets which are presented in fatty alinement during its use, while the sheets are being folded. Paste is distributed by means of roller 102 in the box, to sheets which pass under operation of rollers 72 and 73 and knife 74. Box 71 is sup ported upon the lengthwise-extending rod 75 roller 102 receives rotation from shaft. 103

and gear 104, and gear 104 is actuated by gear 105,. the latter being a part of roller 72. This pasting box, by mechanism within. the machine, is caused to have a limited descending movement, at intervals, so that pasting may be accomplished, this mechanism con sisting of arm 87 having a 'votal mounting at 104'" upon frame 9; link 86- (Figs. 4,26, 27.) extends beneath and parallel with shaft 103 and supporting-rod 75, one of its ends having a pivotal mounting at 105 upon the lower end of arm 87 the opposite end of link 86 terminates at roller 106, said roller being mounted upon the end of this link and adapted to make contact with cam 107 cam 107 is mounted upon cam-shaft 2, and it will be seen. that, by operation of this cam, arm 87 may have a limited swinging movement, so that pasting box 71 will. have an n ward or downward movement, and that lin 86 will have a lengthwise movement. The parts just described are employed upon folding machines generally, and the devices which I will now explain are for the purpose of preventing any descending movement of pastebox 71 and thereby preventing the operation 110 of pasting, except when the sheets pass through the machine in true alinement, t ese devices consisting of latch 76 (Figs. 1, 4, 25..) having one end pivotally mounted at 77 on frame 9, and resiliently held near its center as at 78 by means of spring 80, the operation being that when knife-post 81 makes the usual limited downward stroke, the bottom of the knifepost strikes upon the enlargement 82 of the latch and carries it downward so that the end83 of the latch asses out of horizontal alinement with sheh 84 of bracket 85. In order that paste-box 71 may make a descending movement, link 86 attached to arm 87, as has been stated, must make a lengthwise movement under actuation of cam 107 the lower end of arm 87, together with link 86. is adapted to have a movement lengthwise of the machine as far as she1f 8 4, but since latch .76 interposes its end 83 between the lower end of arm 87 and shelf 84, said lengthwise movement of link 86 is prevented, and therefore, pasting box 71 will not descend upon the paper except when the knife-post 81 makes a downward. stroke,

or, in other words until the sheet upon the guide.

Means are provided for preventing a descending movement of the folding knife until the sheet to be folded has presented its front edge to the two contact leaves 49 upon the end guide and a side edge to contact-leaf 31 of the side guide; before explaining these means, however, consideration should be given to mechanism which actuates' the movements of the knife. The vertical movement of folding-knife 74 will be readily un-' derstood byreference to Figs. 26 and 27. The upturned end 108 of the folding knife is vertically movable in guide 109 upon frame 9, the opposite end of the knife being secured to arm 110, and arm 110 is rigidly mounted at 111 upon knife-post 81 at one end of the machine. Link 1'12 has a pivotal mountingv at 113 near the middle of the machine upon frame 9 beneath rollers 72 and 73; one end of this link has a pivotal mounting, as at 114 upon the lower end of knife-post 81, the op posite end of the link making contact withv cam115; cam 115 is mounted upon camshaft 2. Knife-post 81 and knife 74 have a vertical movement, and move in unison from actuation of cam 115 and link 112; the knifepost. slides within sleeve 116 (Figs. 28 and 29.), this sleeve being secured upon frame 9, and thereby the knife has a true vertical movement.

The means which I provide for preventing the descending movement, upon occasion, of the folding-lmife, consists of arm 88 rigidly mounted upon end-link 18, as by means of the keyed collar 89; arm 88 extends parallel with link 18 in a direction toward post 81, and upon the free end of said arm is secured the engaging-block 90, and since arm 88 and 50 end-link 18 the lengthwise movement of said block 90 have a movement in common with link will cause block 90 to be moved'under or withdrawn from beneath collar 91 which is rigidly mounted u on the vertically-movable knife-post 81, an by these means collar 91 will be caught u on block 90 to prevent the drop of the kni e-post during the time the sheet of paper to be folded is being adjusted upon the tapes to a true alinement with the contact-leaves upon the side and end-guides mentimied. It will be understood that the function of block 90 is to prevent a downward movement of folding-knife 74 at all times while a sheet of paper to be folded is upon the tapes in faulty alinement with the contact leaves mentioned, and it reliably -per forms this function since, the longitudinal movement of end-link 18, failing-to be made by reason of the faulty alinement of the sheet as described, bl0ck 90 will remain beneath collar 91 until the paper sheet upon the tapes has been correctly alined with thecontact leaves upon the guides.

Since the movement through the machine of paper sheets is controlled in the manner pointed out by the novel devices named, it is necessary that the computing machine 91 (Fig. 4.) should be also controlled, so that the counting will be accurate, and for this purpose I secure one end of the thong or strap to the arm 93 of the computing machine, the opposite end being made fast to the bottom of the knife- 0st; a downward stroke of the knife post will actuate the computing mechanism and the counting will be correct since the computing machine will not register, unless there is a movement of link 18.

A description of operation has been made while pointing out-the several devices, so that any further explanation is'not needed; Paper sheets to be folded are first placed upon the table or feeding board 94., and whether the feeding is performed manually or by feeding mechanism, the devices shown herein i116 adapted to prevent waste and financial oss.

I have quite fully shown and described a construction found to be operative and practical for the purposes named, but do not limit myself to exactness of details, and it is considered that many of said details could be changed without departing from the invention, since its scope is determined by the claims.

What I claim as my invention is,

1. In a paper folding machine having movable sheet-bearing tapes and an end-guide, the combination with the downwardly movable folding-knife, of a contact-leaf movably supported upon said end-guide and havin a connection with and adapted to normadly prevent operation of the downwardly mov-' able folding-knife, the construction and ar rangement being such that a moving sheet I upon the ta es will cause a swim ing movement of sai contact-leaf in the irection of said enduide to permit operation of the 4 downwar ly mova e folding-knife.

2. In a paper-folding machine having movable sheet-bearing tapes and an end-guide, the combination with the actuating lever of the folding-knife and cam by which said lever is operated, of adjacently-disposed contactleaves movably supported upon said endguide and havin a connection with and adapted to norma y,hold the lever out of 0 erative position with relation to the cam, t e construction and arrangement bein such that a moving sheetupon the tapes Wil cause a swinging movement of said contact-leaves evee i 7,

in the direction of said endguide to permit operation of said actuating lever and said cam.

3. In a paper-folding machine having movable sheet-bearing tapes, an enduide and a side-guide; the combination wit the actuating lever of the folding-knife and cam'by which said lever is operated, of adjacently- [disposed contact-leaves movably supported connection with and adapted to norma upon said end-guide, a contact-leaf movably supported upon the side-guide, each contact leaf upon the end-guide and the contact-leaf upon the side-guide having a connection with and adapted to normally hold the lever out of operative position with relation to the cam, the construction and arrangement bein such that a moving sheet upon the tapes wi 1 cause a swinging movement of the adj acently-disposed contact-leaves upon the endguide in the direction of said end-guide and a swinging movement of the contact-leaf upon the side-guide in the direction of said sldeguide to permit operation of said actuating ever and said cam.

4. In a paper-folding machine having movable sheet-bearing ta es and an enduide, the combination wit 1 the swinging lade arm of the longitudinal pasting-blade, of ad jacently-disposed contact leaves movably supported upon said end-guide and havingla )7 prevent operation of the swinging blade arm; the construction and arrangement being such that a moving sheet upon the tapes will cause a swinging movement of said contact-leaves in the direction of said end-guide to permit operation of the swin 'in blade-arm of said longitudinal pastin -b a e.

5. In a paper-fol ing machine having movable sheet-bearing tapes, an end-guide and a side-guide; the combination with the swinging blade-arm of the longitudinal pastingblade, of adj acently-disposed contact-leaves movably supported upon said end-guide, a contact-leaf movably su ported upon the side-guide, each contact-[Zaf upon the endguide and the contact-leaf upon the side guide having a connection with and adapted to normally prevent operation of said swinging blade arm; the construction and arrangement being such that a moving sheet upon the tapes will causea swinging movement of the adjacently-disposed contactleaves u on the end-guide in the direction of said en guide and a swingin movement of the contact-leaf upon the si e-guide in the direction of said sideuide to permit operation of the swin ing b ade-arm of said longitudinal pasting-blade.

6. In a paper-folding machine having movable sheet-bearing tapes and an end-guide, the combination with the actuating lever of the roller-paster and cam by which said lever is operated, of adjacently-disposed contactleaves movably supported upon said endgliide and havin a connection with and adapted to norma ly hold the levei out of 01p- Verative position with relation to the cam, t

construction and arrangement bein such that a moving sheet upon the tapes w1l cause a swinging movement of said adj acently-disposedcontact-leaves in the direction of said end-guide to permit operation of said actuating l ver and said. cam.

7. In a paper-folding machine having movable sheet-bearing tapes, an end-guide and a side-guide; the combination with the actuand adapted to normally hold the lever out of operative position withrelation'to the cam, the construction and arrangement bein r such that a moving sheet upon the tapes wifi cause a swinging movement of the adj acently-disposed contact-leaves upon the endguide in the direction of said end-guide and a swinging movement of the contact-leaf upon the side-guide in the direction of said sideguide to permit operation otsaid actuating lever and said cam.

8. In combination with the frame, the endguide the rock-shaft of the reel-arms, the ownwardly-movable folding-knife and horizontally-movable 'sheefibearing tapes of a paper folding machine, of a leaf-arm pivotally supported upon the frame and traversing the plane of the horizontally-movable sheet-b ear-- ing tapes and having a connection with and adapted to normally permit operation of said rock-shaft of the' reel-arms, adj acently-disposed contact jleaves pivotally supported upon said end-guide and having a connection with and adapted to normally prevent operation of the downwardly-movable foldingknife, the construction and arrangement being such that a moving sheet upon the tapes will cause a swinging movement of said leaf-arm to prevent operation of said rockshaft of the reel-arms, and will cause a swinging movement of said adjacently-dispose contact-leaves.to permit operation of the downwardly-movable folding-knife.

9. In combination with the frame, the endguide, the side-guide, the rock-shaft of the reel-arms, the downwardly-movable foldingknife and horizontally-movable sheet-bearing tapes of a paper folding machine, of a leaf-arm pivotallysupported upon the frame and traversing the plane of the'horizontallymovable sheet-bearing tapes and having a connection with and adapted to normally permit operation of the rock-shaft of the reelarms, adj acently-disposed contact-leaves pivotally supported upon said end-guide, a contact-leaf pivotally supported upon said sideguide, each contact-leaf upon the end guide and the contact-leaf upon the side-guide having a connection with and adapted to normally said rock-shaft of the reel-arms and will cause a swinging movement of the adj acentlydisposed contact leaves upon the end guide and a swinging movement of the contact-leaf upon the side-guide, to permit operation of the downwardly-movable folding-knife.

10. In a paper folding machine having movable sheet-bearing tapes and a sideguide, the combination with the downwardlymovable folding-knife, of a contact leaf movably supported upon said sideuide and havin a connection with and adapted to norma ly prevent operation of'the downwardly-movable folding knife, theconstruction and arrangement being such that a moving sheet upon the tapes will cause a swin ing movement of said contact-leaf in the direction of said side-guide to permit operation of the downwardly-movable folding-knife.

11. In combination with the frame, side guide and end guide of a folding machine, of a contact leaf mountedupon the side guide, contactleaves mounted upon the end uide, a side link and an end link upon the frame and adapted to have an endwise movement thereon; a chamfered link adapted to make contact with the contact leaves of the end guide and havin a connection with said end link; the pivotalIy mounted blade 37 adapted to make contact with the contact leaf upon the side uide and having a connection with the side link; the endwise movement of said end link controlled by the contact leaves upon said end uide, and the endwise movement of the si e link controlled by said contact leaf upon the side guide. a

12. In combination with the frame and end guide of a folding machine, of contact leaves mounted upon said end guide, an end link upon the frame adapted to have an endwise movement thereon; a chamfered link adapted to make contact withthe contact leaves of the end uide and having a connection with the en link; the endwise movement-of said end linkcontrolled by the contact leaves upon the end guide.

13. In combination with the frame and side guide of a folding machine, of a contact leaf mounted upon the side uide, a side link upon the frame adapted to have an endwise movement thereon; blade 37 adapted to make contact with the contact leaf upon the side uide and having a connection with the side Iink; the endwise movement of the side link controlled by said contact leaf upon the side guide.

14. In combination with the frame and end guide of a folding machine, said end guide having an arch ormed thereon; of a contact leaf mounted adjacent each end of said arch upon said end guide, an end link upon the frame adapted to "have an endwise movement thereon; a chamfered link traversing the arch of the end guide to make contact with said contact leaves upon the end guide; the endwise movement of said end link controlled by the contact leaves upon said end guide.

15. In combination with the frame and end guide of a folding machine, said end guide having an upwardly-extending arch formed thereon, of a contact leaf mounted adj aeent each end of said upwardly-extending arch upon said end guide, an end link upon the frame adapted to have an endwise movement thereon; a resiliently mounted, chamfered link having an upwardly-extending arch formed thereon andtraversing the upwardly-extending arch of the end guide to make contact with said contact leaves upon the end guide; the endwise movement of said end link controlled by the contact leaves upon said end guide.

In testimony whereof he has affixed his signature in presence of two witnesses.

JOSEPH TRISKA. Witnesses:

HIRAM A. STURGEs, C. S. Woon. 

